Grain-drill



(No Model.)

H. G. STARR & W. 0-. VANNEMAN.

GRAIN DRILL.

No. 271,533. Patented Jan.30, 1883.

ATENT Eric-E.

HORACE STARR AND iWILLIAM G. VANNEMAN, ()F RICHMOND, INDIANA.

GRAIN- DRILL.

SPECIFICATION forming part of Letters Patent No. 271,533, dated January 30, 1883.

Application tiled September 25, 1882. (No model.)

To all 'whom it may concern Be it known that we, HORACE O. STARR and 7M. 0. VANNEMAN, citizens of the United States, residing at Richmond, in the county of Wayne. and State of Indiana, have invented certain newand useful Improvements in Grain- ])rills, of which the following is a specification, reference being had therein 'to the accompanying drawings.

IO Our invention consists in improvements in that/class of grain-drills in which the hoes are held in their normal position by means of a spring; and the object of the invention is toallow the hoe of a grain-drill to encounter obstructions in the ground and pass over them without the danger of breaking the hoes or otherwise injuring the drill. To accomplish this result the hoes are arranged so as not to leave their proper or working position unless the obstruction encountered offers enough resistance to endanger the hoe. \Vhen this resistance reaches acertain point the hoe revolves backward, passing over the obstruction, and is returned to its original position by means of a spring and certain connections.

The invention consists, in connection with a hoe for a grain-drill, filSl',ll] a rocking cylinder, havingan arm, and hooks cast in one piece, and arranged to revolve on a shaft, between the drag-bars.

It also consists oi'a double spring having a central loop for securing it to the hooks on the rocking cylinder, around which it is wound on each side, while its ends are bent and held un- 5 der said drag-bars.

It also consists in a double curved connecting bar or arm attached at one end to the arm on the rocking cylinder, while the other end is attached to a hook or lug on the hoe.

40 It further consists in arranging extra hooks on the rocking cylinder, by which the tension of the spring, when weakened by use, can be readjusted; and it also consists in certain details of construction and arrangement of cer- 5 tain parts, as will be more fully desclibed hereinafter, and more specifically pointed out in the claims, reference being had to the accompanying drawings and the letters of reference marked thereon.

Like letters of reference refer to similar parts sides of a rocking cylinder.

in the difierent figures of the drawings, in which I I Figure 1 represents a plan or top view of the drag-bars and hoe in position. Fig.2 is a side elevation of the same. Fig. 3 is a sectional view of the rocking cylinder and adjacent parts. Fig.4.isamodification ofthe manner of attaching the curved connecting-arm.

In the drawings, A represents the drag-bars or hoe-beam, consisting of two bars bent or curved at the rear end, so as to clasp an ear or lug on the hoel-l. The tiront ends ofthe bars are held apart by a bolt and thimble and the The ear or lug G is provided with a series of holes or perforations,'a, arranged in the arc of a circle, to adjust the hoe in dit't'erent positions or inclinations by abolt passed through the holes. Near the bent part of said bars is pivoted or axially journaled on studs 6 a rocking cylinder, E, having at its rear side a series of hooks, J, centrally arranged, on which the central part of a spring, I, formed into aloop, is attached,while the outer ends thereof are bent outward and held under the drag-bars A. The spring is coiled around the cylinder E, and the tension thereof can be adjusted by a tension-screw, F, by which means also the point K of the curved connecting arm or lever 0 may be thrown in and out of line with the points H and L. By this means the resistance required at thehreaking or starting point of the hoe is regulated.

The curved connecting-arm O is made double or Ushaped, and provided at its opposite ends with a transverse pin, and is attached at one end to the hook on the end of the arm D, cast on the rocking cylinder E, while the other endis attached to a hook, Z), on the hoe B.

The arm D may he provided with an eye, (1, at one end, with a hole, 0, in it, if desired, instead of a book, so that a bolt or rivet may be employed to make the joint, and a similarjoint may be employed to connect the curved arm 0 to a lug, g, on the hoe with its opposite end, as shown in Fig. 4.

For adjusting the pitch or inclination of. the hoe. B to a greater or less angle a series of holes, a, are arranged in the ear G, in the arc ofa circle, into which holes a bolt is entered,

passing through the ends of the drag-bars A, Ico

and according to the hole in which they are secured the inclination of the hoe is changed. The tension-screw F is set in a plane and at right angles to the arm D, and passes into the cylinder E, which is made solid, and this forms an important feature of this invention. Additional hooks J, to tighten the spring when weakened by use, may be applied to cylinder E, over which the center loop of the spring I may he slipped.

The advantages of this improved construction of hoe, for grain-drills will be readily appreciated by those skilled in the art, and some of them are that the tension of the spring can be adjusted as required in an expeditious manner, and the resistance of the hoe desired at the point of breaking or starting can be regulated to a nicety. The deviceis much simpler in its construction than any now in use, as but four pieces are reqnired-viz., one spring, a tension-screw, one rocking cylinder, and a curved connecting-arm. The pitch or inclination of the hoe can be quickly regulated as desired, and the device is not liable to get out of order, and it can be furnished at a very moderate cost.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

1. In a hoe for grain-drills, a cylinder, E, having an arm, D, journaling-stnds e, and aseries of hooks, J, cast in one piece, substantially as specified.

2. In a hoe for grain-drills, an adjustingscrew, F, in combination with a rocking cylinder, E, having an arm, D, studs e, and a series of hooks, J, substantially as and for the purpose set forth.

3. In a hoe for grain-drills, a double spring, I, having a central loop for adjusting it on the hooks J of the rocking cylinder E, substantially as herein specified.

4. In a hoe for grain-drills, the adjustingscrew I passing into the rocking cylinder E, provided with an arm, D, and a series of hooks, J, in combination with a double spring, I, having central loop, substantially as described.

5. The combination of a rocking cylinder, E, having an arm, I), and a series of books, J, with a double spring, I, a curved connectingarm, 0, and a hoe, B, all arranged substantially as and for the purpose specified.

6. The combination of the drag-bars A, rocking cylinder E, having arm D, a series of hooks, J, and a tension-screw, F, with a double spring, I, provided with a central loop, a curved counecting-arm, (J, and a hoe, B, with adjustingholes a, all arranged substantially as shown and specified.

In testimony whereof we atIix our signatures in presence ot'two witnesses.

HORACE (J. STARR. VILLIAM O. VANNEMAN. itnesses:

WM. A. PEELLE, Lnwrs D. STUBBs. 

